Measurement of the b-hadron production cross section using decays to D¿+µ-X final states in pp collisions at View the MathML source with the ATLAS detector

G. Aad, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Peter Henrik Hansen, John Renner Hansen, Nele Maria Philomena Boelaert, Morten Dam Jørgensen, Esben Bryndt Klinkby, Simon Johann Franz Heisterkamp, Sascha Mehlhase, Troels Christian Petersen, Björn Stefan Nilsson, Stefania Xella

28 Citationer (Scopus)

Abstract

The b-hadron production cross section is measured with the ATLAS detector in pp collisions at s=7TeV, using 3.3pb-1of integrated luminosity, collected during the 2010 LHC run. The b-hadrons are selected by partially reconstructing Dz.ast;+μ-X final states. Differential cross sections are measured as functions of the transverse momentum and pseudorapidity. The measured production cross section for a b-hadron with pT>9GeV and |n|<2.5 is 32.7±0.8(stat.)-6.8+4.5(syst.)μb, higher than the next-to-leading-order QCD predictions but consistent within the experimental and theoretical uncertainties.

OriginalsprogEngelsk
TidsskriftNuclear Physics B
Vol/bind864
Udgave nummer3
Sider (fra-til)341-381
ISSN0550-3213
DOI
StatusUdgivet - 21 nov. 2012

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